SEGJ Technical Conference

CCS Monitoring using the Permanent Seismic Source ACROSS at the Aquistore Site in Saskatchewan, Canada: Challenges and Difficulties for Analysis of Time-lapse Data

Abstract JOGMEC has been conducting the CO2 injection monitoring experiments using the permanent rotary seismic source ACROSS at the Aquistore CCS field in Saskatchewan, Canada since 2014. The CO2 injection layer is three sand layers at about 3200m depth, their porosity is 10% or less and their total net thickness is less than 30m. The NRMS after CO2 injection, which is estimated from fluid substitution using the well log data is about 30%. Therefore, we have to obtain the NRMS less than 20% at the outside of injection area by ACROSS monitoring. We introduce the way of data acquisition and processing to achieve this.